When the rays of heat energy from the sun strike the water on Earth, this causes the water to change states. If water changes from a liquid to a gas, this is called evaporation.
Do the next experiment and find out how heat energy affects the amount and rate of evaporation.
TRY IT
Materials:
- Three clear plastic cups filled with about 50 ml.
of water
- Make sure that the cups have equal amounts of water to control the variables.
- Fine point black marker
Procedures:
- Place the cups with water in various locations, such as inside on a countertop, outside in direct sunlight, and outside in the shade.
- Record the time you set the water at each location.
- Check your water sites every 15 minutes and mark the water level on the cup. Observe and record until the water is gone from at least one of the cups.
Analysis:
Answer the following questions in your science journal.
- What happened?
- How did the location of the water site effect evaporation?
- Why do you think the location made a difference?
- Did the color of the surface make a difference?
- Did the roughness of the surface seem to affect the results?
|
|||||
| Get the plug-ins: Want to share photos of you or your friends doing this activity? Send it in an e-mail with the following information: the title of the activity, the URL (Internet address), and your name. Remember that no pictures can be used which show any student faces or has a student name. Updated
August 18, 2005
by: Glen Westbroek |
